#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	int year = 1000;
	while (year <= 2000 && year >= 1000)
	{
		if ((0 == year % 4 && year % 100 != 0) || (0 == year % 400))
		{
			printf("%d ", year);
		}
		year++;
	}
	return 0;
}